San Andrés in January

December through April delivers the driest weather and calmest seas. Trade winds keep temperatures comfortable around 84°F, and rainfall drops to almost nothing. This is peak season, meaning higher prices and crowded beaches, but also the most reliable weather for water activities. May through July brings occasional afternoon showers but fewer crowds and better deals. Hotels drop rates by 30%, and you'll have beaches mostly to yourself. The rain usually lasts an hour, then the sun returns stronger than before. August through November is hurricane season, though direct hits are rare. September sees the heaviest rainfall, with afternoon thunderstorms that can derail beach plans. But here's the upside: accommodation costs plummet, and the island feels authentically local without tourist crowds.